DIN 55672-1:2007 PDF

Scope: This standard describes the determination of the molecular weight distribution, number-average molecular weight Mn and weight-average molecular weight ,Mw of polymers that are soluble in THF (tetrahydrofuran) by gel permeation chromatography (GPC). It is possible that, in spite of the good repeatability of the chromatograms obtained, this method cannot be used with certain polymer types because of specific interactions (e.g. adsorption) within the sample/eluent/column system. The method is not an absolute one and requires calibration with commercially available unbranched polystyrene standards that have been characterized by independent absolute methods. The results for samples of polymers other than polystyrene are therefore only comparable within groups of samples of the same type. The conditions specified in this standard are not suitable for the GPC analysis of polymer samples with Mw values greater than 10~6 g/mol (see Annex C). No correction methods (e.g. for the elimination of peak broadening) are included in this standard. If absolute molecular weight values are required, an absolute method (e.g. membrane osmometry for Mn or light scattering for Mw) shall be used.

DIN 55672-1:2007 Referenced Document

DIN 50014 Standard atmospheres for conditioning and/or testing - Specifications*， 2018-08-01 Update
DIN EN ISO 1513 Paints and varnishes - Examination and preparation of test samples (ISO 1513:2010); German version EN ISO 1513:2010*， 2010-10-01 Update
DIN EN ISO 15528 Paints, varnishes and raw materials for paints and varnishes - Sampling (ISO 15528:2020); German version EN ISO 15528:2020*， 2020-12-01 Update
DIN ISO 5725-1 Accuracy (trueness and precision) of measurement methods and results - Part 1: General principles and definitions (ISO 5725-1:1994)

2016 DIN 55672-1:2016 Gel permeation chromatography (GPC) - Part 1: Tetrahydrofuran (THF) as elution solvent
2007 DIN 55672-1:2007 Gel permeation chromatography (GPC) - Part 1: Tetrahydrofuran (THF) as elution solvent
1995 DIN 55672-1:1995 Gel permeation chromatography (GPC) - Part 1: Tetrahydrofuran (THF) as elution solvent